5MW OFFSHORE WIND TURBINE PROTOTYPE
PROJECT FUNDED BY H2020 PROGRAM
Arinaga and PLOCAN (Gran Canaria). 2015-2017
The ELISA prototype, which is currently under construction in the Canary Islands , is set to become the first bottom-fixed offshore wind turbine completely installed with full independence of costly and scarce heavy lift vessels.
The ELISA technology involves a novel self-floating GBS foundation system which integrates an autolift telescopic tower, and can be fully assembled on dock. The telescopic configuration of the tower brings down the center of gravity during the towed self-floating transport, allowing the bottom foundation platform to temporarily act as a self-stable floating barge over which the complete system can be preassembled inshore.
Once ballasted to the rest on the seabed, the tower can be lifted to its final position by means of cables and conventional out-of-the-shelf heavy-lift strand jacks which are reused to lift each tower level successively. All works are carried out from a single access platform.
Expected cost reduction capabilities – as due diligence by both benchmark developers and offshore turbine manufacturers – exceed 35% when compared to Jackets or XXL Monopiles in deep waters (35m plus). It is a system excellently suited for the next generation of offshore wind turbines thanks to its direct scalability, based only on conventional and readily available equipment and means.
The technology has been developed and certified following all standards of the Technology Readiness Level (TRL).
In short, the prototype culminates a 7-year development and demonstration process, which has been supported by benchmark R&D institutions such as CDTI and the Horizon 2020 program by the EU commission under the ELISA/ELICAN projects. Those projects led by ESTEYCO, also counts with the collaboration of three partners leaders in their respective fields such as: GAMESA, ALE Heavy-Lift and DEWI-UL.